AGRF900-2 Polymeric PTC Resettable Fuse Equivalent & Substitute Parts

Part Overview

The AGRF900-2 is a polymeric PTC resettable fuse manufactured by Littelfuse Inc. in the PolySwitch® AGRF series. This through-hole radial disc component is rated for 16V maximum voltage with a 9A hold current and is designed for overcurrent protection applications. The part is currently active in production with AEC-Q200 ratings and ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical dimensions, and thermal performance parameters to ensure direct functional replacement in circuit designs.

Substiute Parts

AGRF900-2

Littelfuse Inc.In Stock: 747AGRF900-2 Datasheet

Current PartRFQ

16R900GF

Littelfuse Inc.In Stock: 136316R900GF Datasheet

SimilarRFQ

16R900GMR

LittelfuseIn Stock: 164616R900GMR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AGRF900-2 are qualified based on the following critical parameters that determine functional equivalence:

Electrical Parameters (Primary Criteria):

• Voltage - Max: 16V
• Current - Hold (Ih) (Max): 9 A
• Current - Trip (It): Within acceptable tolerance range
• Resistance - Post Trip (R1) (Max): 14.6 mOhms maximum
• Operating Temperature: -40°C ~ 85°C

Mechanical Parameters (Secondary Criteria):

• Mounting Type: Through Hole
• Package / Case: Radial, Disc
• Size / Dimension: 14.00mm x 3.00mm
• Lead Spacing: Tolerance within 5.05mm ± 0.05mm

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Product Status: Active

The substitute parts 16R900GF and 16R900GMR meet these criteria with minor variations in Current - Trip (It) (15.3 A vs. 16.5 A) and Time to Trip (5.5 s vs. 6 s), which remain within acceptable operational tolerances for polymeric PTC resettable fuse applications. Both substitutes maintain identical voltage, hold current, post-trip resistance, and mechanical dimensions.

Parameter Comparison

Engineering Selection Recommendations

Both 16R900GF and 16R900GMR are qualified substitutes for the AGRF900-2 based on electrical and mechanical parameter alignment. Selection between these options depends on packaging and availability requirements:

16R900GMR is the preferred direct substitute when Cut Tape (CT) packaging is required, matching the original AGRF900-2 packaging format. This part maintains identical electrical specifications and mechanical dimensions with 1600 pieces currently in stock.

16R900GF is suitable for applications where Bulk packaging is acceptable. This substitute offers the highest inventory availability at 1349 pieces and includes cURus and TUV approval agency certifications. The MSL rating of 1 (Unlimited) provides additional moisture handling flexibility compared to the AGRF900-2.

All three parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8533.40.8070. Product status is Active for all options, ensuring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can 16R900GF and 16R900GMR be used interchangeably with AGRF900-2?

A: Yes. Both parts meet the critical electrical parameters: 16V maximum voltage, 9A hold current, and 14.6 mOhms maximum post-trip resistance. Mechanical dimensions are identical at 14.00mm x 3.00mm with compatible lead spacing. The minor differences in Current - Trip (15.3 A vs. 16.5 A) and Time to Trip (5.5 s vs. 6 s) remain within acceptable operational tolerances for polymeric PTC resettable fuse applications.

Q: What is the difference between 16R900GF and 16R900GMR?

A: The primary difference is packaging format. 16R900GMR is supplied in Cut Tape (CT), matching the AGRF900-2 packaging. 16R900GF is supplied in Bulk packaging. Electrically and mechanically, both parts are identical. 16R900GF includes cURus and TUV approval certifications and has an MSL rating of 1 (Unlimited), while 16R900GMR does not list specific approval agencies.

Q: Are there any height differences that affect PCB assembly?

A: Yes. The AGRF900-2 has a maximum seated height of 0.906" (23.00mm), while both 16R900GF and 16R900GMR have a maximum seated height of 0.854" (21.70mm). This 0.052" (1.30mm) reduction in height may be beneficial for space-constrained designs but should be verified against PCB layout requirements.

Q: Do all three parts have the same operating temperature range?

A: Yes. All three parts operate across -40°C to 85°C, ensuring consistent thermal performance across the specified range.

Q: What compliance certifications apply to these parts?

A: All three parts are ROHS3 compliant and REACH unaffected. The AGRF900-2 carries AEC-Q200 ratings. The 16R900GF includes cURus and TUV certifications. All parts are classified as EAR99 for export control purposes.